require_relative "../../../../base" describe "VagrantPlugins::GuestAtomic::Cap::ChangeHostName" do let(:described_class) do VagrantPlugins::GuestAtomic::Plugin .components .guest_capabilities[:atomic] .get(:docker_daemon_running) end let(:machine) { double("machine") } let(:comm) { VagrantTests::DummyCommunicator::Communicator.new(machine) } before do allow(machine).to receive(:communicate).and_return(comm) end after do comm.verify_expectations! end describe ".docker_daemon_running" do it "checks /run/docker/sock" do described_class.docker_daemon_running(machine) expect(comm.received_commands[0]).to eq("test -S /run/docker.sock") end end end